CN1040120A - Total data communication exchange system - Google Patents
Total data communication exchange system Download PDFInfo
- Publication number
- CN1040120A CN1040120A CN 89101114 CN89101114A CN1040120A CN 1040120 A CN1040120 A CN 1040120A CN 89101114 CN89101114 CN 89101114 CN 89101114 A CN89101114 A CN 89101114A CN 1040120 A CN1040120 A CN 1040120A
- Authority
- CN
- China
- Prior art keywords
- communication
- control module
- channel
- cpu
- exchange system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Abstract
The present invention has mainly developed a kind of integrated data switch, it and communication terminal and communication channel be common to constitute a unified total data communication exchange system, this system can make dissimilar terminal equipments by information processing, obtain a unified signal mode, can have comprehensive functions such as conversation, circular, fax, Chinese terminal and microcomputer communication simultaneously, maximally utilise the resources performance of long-distance channel.Simultaneously,, stronger channel adaptability is arranged, promptly can be used for satellite communication and can be used for wireless or wire communication again, promptly can be used for digital communication and can be used for analog communication again owing to adopted memory dump " DUMP " technology.
Description
The present invention is a kind of total data communication exchange system, is specially adapted to modern integrated data communication, belongs to communication technical field.
Current science and technology development, the particularly development of Communications And Computer technology and the communication technology combine with computer technology, for society has brought multiple means of communication.As intelligent telephone set, intelligent telegraph, facsimile machine, multiple novel means of communication such as Chinese terminal, microcomputer and vocoder, yet, because the management and the switching equipment of communication channel also do not make its functional diversities.Therefore, up to the present, also on a kind of same switching equipment, do not realize the automatic exchange and the interface function of above-mentioned various terminals, thereby limited the flexible network access ability of various terminal equipments greatly.Use Group 3 Facsimile Equipment more widely at present, be to utilize this machine modulator-demodulator " MODEM " to convert digital signal to analog signal, point-to-point transmission on telephone network, also do not realize the automatic exchange of facsimile message, Group 3 Facsimile Equipment simultaneously, can not be directly in the satellite digital channel information of 2400-9600Pbs.And microcomputer and Chinese terminal, then generally realize automatic exchange message on the net in packet switching, this has brought restriction not only for making full use of of telecommunication network resource, and to user's multiple service, the i.e. integrated use of simulation words, digital words, phototelegram, low speed telegram has brought great inconvenience, has seriously limited the flexibility of various digital terminal equipments networkings and promoting the use of of integrated service.
The objective of the invention is to how to make dissimilar communication terminal devices to obtain a unified signal mode through information processing, and can have comprehensive functions such as conversation, circular, fax, Chinese terminal and microcomputer communication simultaneously, maximally utilise the resources performance of long-distance channel.
Function of the present invention and superiority are as follows:
1, regular phone, digital telephone (sound sign indicating number words), the communication of terminal equipments such as phototelegram (Group 3 Facsimile Equipment), telex, Chinese terminal and microcomputer all can realize exchange automatically by this program control integrated data switch, and long-distance manual closing operation and the function of advancing local network are arranged.
2, the present invention has very strong adaptability.Promptly be applicable to satellite communication, be applicable to wired carrier-current communication again; Promptly be applicable to analog communication, be applicable to digital communication again.No matter its traffic rate of which kind of environment for use can be aligned in the 50-9600pbs scope automatically according to channel quality, (sound sign indicating number words: traffic rate is that the 2400pbs/4800pbs simulation is talked about: the speech channel frequency f till obtaining iptimum speed
K=3400HZ), also can add the function of error correction coding equipment.
3, when multiple terminal equipment alternately transmitted information on same long-distance channel, native system was automatic detection to its overall process, can make full use of the utilization rate of intercity line.
4, guarantee various communication terminal devices, easy and simple to handle, transmission information is reliable.
5, can realize secure communication.(need add privacy device in addition).
Technical solution of the present invention as shown in Figure 1, total data communication exchange system is made up of three parts as can be seen from Figure: first is a communication terminal device, comprising: Group 3 Facsimile Equipment 1,1 '; Teletype writer 2,2 '; Chinese terminal 3,3 '; Microcomputer 4,4 '; Private network telephone set 500-509,510-519; Public network telephone set 6,6 '; Vocoder 8,8 '; Among the figure 7,7 ' be this area Local Exchange.Second portion is the communication channel part, comprise ground satellite station 10,10 '; Communication satellite 12; Wire radio station 11,11 '; Intercity line 13; Third part be integrated data switch 9,9 '.
Above-mentioned first and second portion are identical substantially with the equipment that uses at present, the invention is characterized in developed integrated data switch 9,9 ', it and the switching system of a communication terminal and a unified integrated data communication of the common formation of communication channel.It can make various terminal equipment set up and a shared communication switch system, make the polymorphic type communication terminal in native system, work, communicate by letter on private network as a certain type terminals, therefore can maximally utilise channel resource.Owing to adopted memory dump " DUMP " technology,, promptly can be used for satellite communication and can be used for wired or wireless communication again, and can adopt numeral or analog communication in addition so native system has higher " channel " adaptability.Briefly introduce the communication of different types of terminals equipment when utilizing native system below and set up process:
One, the course of work of the present invention:
1, telephone communication mode
(A) short range telephone exchange: 500-509 is the telephone terminal in somewhere in the accompanying drawing 1, and the liaison between them has the function of general SPC telephone exchange, and its method of operation is entirely identical to the telephone communication procedure of present use.
(B) remote phone exchange: suppose that 500 need and 510 conversations, be different from the short range phone, when communication channel is busy, " obstruction " phenomenon will occur, other method of operation is same as the short range telephone exchange fully.For this point clearly is described, table 1 has been described the numbering plan of native system telephone number:
Table 1
Telephone number is by binary digit " X
1X
2" form wherein the first number " X
1" definite principle as follows: X when remote phone exchanges
1=2; X during the short range telephone exchange
1=3, and the X of mantissa is determined by table 1, communication software is determined the conversation route user not to be increased attaching operation according to above numbering plan.
When (C) long-range local network (public network) user 6 called out another regional 510-519 by " TT " Local Exchange, user 6 dialed the number and is:
Public network number+private network number ... (1)
The public network number is " TT " definition tm telephone number in the formula (1), and the private network number is native system definition 20-29; For example, tm=287654, special number are 23, and then the user need dial 287654, hear for the second time dialing tone after, dial 23 again.
When the local network user needs and during another regional local network conversation, establish tm '=810123.6 ' subscriber dialing formula to be:
Originating party public network number+private network number+debit's public network number ... (2)
If 6 telephone numbers are 284321, then 6 ' ringing number is 810123, listens ring-back tone, dials 00 tin of ring-back tone, dials 6 Subscriber Numbers 284321 again.Wherein " 00 " dials the local network number for native system.
(D) no matter which kind of communication form of above-mentioned A, B or C, native system all can select " encrypted word " or " unencryped word " transmission.When long-distance channel adopts data channel (2400pbs/4800pbs), must receive usefulness " sound sign indicating number " technology, as E in the accompanying drawing 1
n(8) E
nShown in ' (8 ').
2, telegraph communication mode:
The telegraph communication mode designs according to the teletype writer working method as shown in Figure 2, and its course of work is " session " and " DUMP " two kinds of modes." single worker's single-current system " adopted in teleprinter and exchange interface, and traffic rate is 50-300BD; Signaling code form adopts " international alphabet No.2 ", and " numerical protection code " also can be used in the specific occasion.
In the accompanying drawing 1, if 2 need and 2 ' transmission telegram, after operating personnel obtain response that switch sends, available teletype writer input telegraphic message, after a telegram distributes, send forward command to switch, then native system to store " message " and format processing, and add " CRC " verification measure, send to the other side's switch with channel speed 2400-9600pbs.After the other side receives, with an above-mentioned inverse process be transmitted to 2 '.
For teletypewriter user, a cover duties session term is generally arranged, so the telegraph communication mode can independently be carried out.See that from accompanying drawing 2 the stage C that signs after call phase A and the message transmissions is " session " mode and communicates by letter before message transmissions; And adopt " DUMP " mode to communicate by letter in the message communication stage B.She Ji purpose is the communication visualization and improves telegram effective like this.Go back the telegraph communication mode under the holding state simultaneously, in the case, the telegraph communication mode can be exempted stage A and stage C in the accompanying drawing 2.
In addition, the telegraph communication mode also has the function of " multiple-address telegraph ", accomplishes a text of originating party 2, in channel once, can make debit 9 ' in several telegraph subscribers receive identical information simultaneously, thereby improve telegram effective.
3, facsimile communication mode.
For making Group 3 Facsimile Equipment G III Fax not only can upload transmission information, and can on data channel, transmit in analog channel.And traffic rate is not subjected to the restriction of G III Fax traffic rate, program control integrated data switch 9,9 ' have G III Fax simulation performance.
(A) time sequencing of facsimile machine calling
According to the T30 rule that " International Telecommunication Association " CCITT formulates, the time sequencing that Group 3 Facsimile Equipment G III FaX calls out as shown in Figure 3.
The definition in each stage can be consulted version " Red Data Book " T series in 1986 suggestion in relevant G III FaX order call time.
(B) realization of G III FaX simulator:
The communication form in each stage is as follows in the accompanying drawing 3:
AE: be telephone communication;
BD: be " training " communication, signal format adopts " HDLC ".Traffic rate is 300-Pbs;
C
1C
2: be the communication of high speed picture and text.Traffic rate is respectively 2400Pbs, 4800Pbs, 7200Pbs and 9600Pbs.
Advise according to " CCITT " tissue T O: Group 3 Facsimile Equipment G III FaX should use on the net at public telephone, can use on the net at public telephone for making G III FaX, can use on the net in exclusive data again simultaneously.Native system is to five whole emulation of stage of facsimile machine order call time.But, with regard to communication, only C
1, C
2Graph text information in stage transmits in communication system.The course of work of relevant simulator can be consulted accompanying drawing 4.T represents the time in the accompanying drawing 4: FaX
1, FaX
2Be both sides G III FaX:AT
1, AT
1' AT
2, AT
2' be respectively both sides' simulator of faxing; CH is the long distance communication channel.A, B, C in the accompanying drawing 4
1, C
2, D, E is respectively five stages of G III FaX.Other symbol among Fig. 4 will be drawn definition respectively in will narrating below.
From accompanying drawing 4, can find out:
1. the course of work stage A of facsimile machine, B, D, E only carry out between simulator and facsimile machine, make the Group 3 Facsimile Equipment of any model transmit picture on data channel just because of the participant of emulation technology and become a reality.And created fine condition technically for pictorial information " encryption ".
2. because simulator AT has adopted " DUMP " technology, so time delay T △ in the information transmission, will occur.If the facsimile machine traffic rate is the μ value, the traffic rate of long-distance channel is μ
*Value;
If make channel transfering information at " zero-waiting " state, do not reduce the utilance of channel, should satisfy:
μ
＊≤μ……（3）
(C) operation of facsimile machine communication:
Native system has adopted the facsimile machine emulation technology, but does not bring any additional operations, under both sides' talking state, as long as originating party is pressed " START " key of facsimile machine, and all control automatically of all processes in the accompanying drawing 4.When channel CH transmits " FaX ", (consult accompanying drawing 4), this moment, in the telephone receiver with shown in the music.
In view of the consideration that improves channel utilization and fax timeliness, simulator have " identical text fax " characteristic it can be according to originating party user's order, with picture is disposable receive after, be distributed to several users successively.If certain user's unattended operation can be temporarily stored in the memory of simulator, as " IMA " part in the accompanying drawing 4.
4, Chinese terminal and microcomputer communication mode:
Chinese terminal and PC belong to the terminal equipment of same type basically.Its communication is decided by both sides' software dictates.Whether native system can need set up CRC check and other function according to the user.
Two, hardware of the present invention constitutes:
Integrated data switch 9,9 ', hardware block diagram is as shown in Figure 5.Its critical piece comprises cpu system 22,23,24,25,28,29; Telephone control module 33; Data Control module 14,15,16,17, facsimile machine control module 18,19; Microcomputer and Chinese terminal control module 20,21; Teletype writer control module 32; Communication channel control module 30,31; Vocoder control module 26,27.The structure organization of each parts has " cordwood system type " characteristics, when the user terminal capacity need increase, can set up CPU-II system 22,23,24,25, and its management software unification is by 28,29 scheduling of CPU-I system.Tell about the operation principle of each control module below respectively.
1, the principle of compositionality of MUX-T33 module:
" MUX "-T " 33 be the phone control assembly.It mainly is made up of telephone subscriber's circuit MH88500 and succeeding component MT8812.MH-88500 reaches MT8812 and is Canadian MITEL product, is two extensive " IC " assemblies.The principle of compositionality of " MUX-T " module is respectively by shown in accompanying drawing 6, the accompanying drawing 7.Accompanying drawing 6 is MUX-T principle of compositionality figure, and accompanying drawing 7 is the MT8812 schematic diagram that continues.
Telephone (500-509) provide various functions by MH88500 respectively, as bell sound, ring, feed or the like; MT8812 is one 12 * 8 a chip matrix, as shown in Figure 7, and ML wherein
1-ML
5Be 5 cord circuits, phone is clog-free formula when short-haul connections.The control signal of MT8812 derives from CPU-I system.
RTM36 is register(system) parts, and its major function is to finish the operation of cordless switchboard.In order to reach phone " network access " index that measurement centre of China Ministry of Posts and Telecommunications is issued, RTM36 has the performance of bi-directional gain.By the control of RTM36, finish the automatic linking task of private network and public network telephone exchange.
Vocoder control module En-a(26), En-b(27) mainly be to be to use under the 2400Pbs/4800Pbs data channel situation at long-distance channel.Certainly, the configuration of general vocoder quantity is decided on channel quantity.
MUX-T(33) another important step is that the figure disc of Tel has dual-use function, and one is the general calling dialing, it two can be under talking state, by the different numeral of figure disc input, and the selection of control P/C terminal, presetting of working method, and the functions such as self check of FaX.
2, cpu system principle of compositionality:
Cpu system adopts CPU parallel work-flow technology.Its principle of compositionality as shown in Figure 8, accompanying drawing 8 is a cpu system.
CPU(22,28) respectively select Z80-A for use; Clock frequency is 4MHZ, and Ec-a24, Ec-b25 are two independently parallel interface chips in the accompanying drawing 8.When channel quantity increased, Ec quantity also increased, and its main cause is in order to improve the operating time of running software.
The cpu system ram space is 108KB.Wherein 104KB is used to store the picture compression information of G III FaX, and the message information of P/C terminal.The spatial organization of RAM is that " formation " structure is respectively by owner pointer and tail pointer control.Connect the communicator program by the unified scheduling of JOP-I operation procedure.
3, FX-a18, FX-b19 principle of compositionality:
FX-a18, FX-b19 are G III FaX interface module, and the common name simulator is with " AT " expression.Accompanying drawing 9 is the principle of compositionality of simulator.SIO37 is a kind of serial i/o interface chip able to programme.Stage B among the G III FaX, D training information and stage C
1, C
2The transmission of high speed information realizes that by SIO37 work the SIO37 workflow is supported T30 suggestion among the CCITT fully.
When G III FaX was set to the automatic reception state, regulation must have caller tone signal CNG and called tation id signal CED in the T30 suggestion before stage B.The effect of TES39 parts mainly is to prepare for the detection and the transmission of CNG, CED signal.
40 is a kind of RS-422-C standard interfaces in the accompanying drawing 9.When the geographical position of G III FaX and native system during less than 20 meters, can use more general RS-232-C interface, when the two distance is far away, then must adopt the RS-422-C interface.
(D) principle of compositionality of Data Control module MUX-F, MUX-P:
MUX-F16 is a G III FaX data multiplex selector switch in the accompanying drawing 5; MUX-P17 is PC and Chinese terminal data multiplex selector switch.F/P15 is total selector switch of MUX-F16 and MUX-P17.Because the signal transmission form of these three kinds of terminal equipments is data type, thus in a shared RS-422-C interface (or RS-232-C) accompanying drawing 10 than depicted in greater detail MUX-F16, MUX-P17 and F/P15 three's logical relation.
(E) communication channel control module EL-a, the EL-b principle of compositionality:
EL-a30 in the accompanying drawing 5, EL-b31 are that two identical channel interface module, hardware configurations are analogous to " AT " parts.Its control procedure is described in the next section.
(F) teletype writer control module principle of compositionality.
The TEXC32 module is the teleprinter interface parts in the accompanying drawing 5.Therefore at present, the communication mode of teleprinter all adopts asynchronous system, communicating by letter between native system and teleprinter must be observed this rule.Accompanying drawing 11 has provided the signal format of teleprinter.
The TEXC32 module functions is to finish the simplex/duplex standard transformation; Finish the data transaction of serial simultaneously.Its cardinal principle is to have adopted " GD-310 " serial photoelectrical coupler and " SIO " programmable chip.
The traffic rate of teleprinter can 300(BD) be adjusted in the scope 50,75,100; The code form can be selected in " international alphabet No.2 " and " numerical protection code ".The method of adjustment of two kinds of performances is all controlled with phone number code-disc input digit.If telegraph communication adopts independent mode, then sets up under " international alphabet No.2 " and 50BD state and work.
Three, software block diagram of the present invention.
1, the technical characteristic of total data communication exchange system software:
Software configuration of the present invention as shown in Figure 12.System program is by adopting the adjacent bed method of calling between modularized design, the modular structure, being that the Ai layer only can call the software in the Ai-1 layer.Under this method of calling, the resource that provided of Ai layer and function whole bases that will form the Ai+1 layer.Adopt the advantage of this software module structure to be: the Ai layer is only relevant with the Ai-1 layer and irrelevant with the Ai-2 layer.So its software interface is provided easily in the design of program by the process resource inventory.But its deficiency is: when user capacity increases, will produce lower execution usefulness.For alleviating this contradiction, native system has been quoted CPU parallel work-flow technology, shown in accompanying drawing 8, accompanying drawing 12.
In the accompanying drawing 12, MON(51) be hypervisor: JOP-I (52), JOP-II (53) are operation procedure.
MUX-T(54) be the phone control subprogram.
EL(55) be the channel management subprogram;
EC(56) be the dual-cpu communication subprogram;
LED(57) be display subroutine;
FaX(58) be G III FaX emulation subprogram;
P/C is PC and Chinese terminal supervisory routine;
SP(59) be CPU-II current process subprogram;
TELEX(60) be the telegram subprogram.
2, software block diagram
Total data communication exchange system software block diagram such as accompanying drawing 13-1 are shown in 13-2, the 13-3.As what mention in above-mentioned several joints, in order to satisfy the functional requirement of various terminal equipments, reach the timeliness ability that improves software, native system has been quoted " two-shipper " parallel running technology, can find out this point from accompanying drawing 13.In a single day native system starts (START), the CPU-I, and the CPU-II is moved simultaneously.What time following narration is emphatically below:
(a) simulator AT, microcomputer/Chinese Terminal Equipment P/C job order has following level (is example with " AT ")
Short range control section such as TeleXTel part are then omitted CPU communication link, in case this level end-of-job can directly drive the channel communication level.
(b) native system is a host CPU with the CPU-I, and the CPU-II is from CPU.So for " interruption " system, the CPU-II is a peripheral interrupt source of CPU-I.The priority grade of all interrupt sources is similar with accompanying drawing 13 basically in the native system.
(c) sound sign indicating number words subprogram.The CPU-I is not done format to the information of sound code telephone and is handled, and only is " process " control.But the CPU-I is done information to sound sign indicating number words all the time and is detected.
(d) in the accompanying drawing 13 " sign ", i.e. expression is then sent out an identity code " 01111110 " when not having " job information " in the channel, and accomplishes regularly cycle detection channel quality condition.
Four, rule of communication used in the present invention
Native system has adopted two kinds of communication protocols generally.A kind of is the channel communication stipulations, and its ensures that each state course of telecommunication both sides normally carries out, and another kind is the simulator communication protocol, and it mainly finishes communicating by letter of each stage process between G III FaX and the simulator.Above-mentioned two class communication protocols all adopt " high-level data link communication control procedure " HDLC form.Introduce respectively below:
1, channel communication stipulations:
The native system communication protocol is a kind of private communication protocol." signaling " input form can be used " figure disc ", also can import different command with " PC " switch dish.Communication protocol will be controlled both sides' process synchronously deeply according to user's order.Reliable for guaranteeing, signaling format adopts " replying " mode.Marked signaling format among Figure 14.Therefrom can find out: going deep into of each process, a password must be arranged, and, arrange simultaneously with a response, the stem of signaling is a password, with " CM " expression; Afterbody is response, with " XM " expression.
Stipulating aspect the transmission of form: sending out password one side has repeatedly retransmitting function.It is relevant with the quantity of traffic rate divided rank that it retransmits number of times.If channel communication speed has been drawn two grades, then password has secondary to retransmit chance.Retransmit and only under abnormal conditions, to produce, CM as XM in (a) in the accompanying drawing 15 and (c)
1Shown in.Under the normal condition, each signaling is goed deep into a corresponding process.Before retransmitting password, must send out one " leader " EM earlier; Send out " training information " again.Training information is " twocouese ", plays " sign performance " effect; Next sends out CM such as accompanying drawing 15.T
mBe CM(XM) required time.
Stipulating on the time of carrying out action: be 0.7S time of delay after sending out password; Make sound to be 1.0S back time of delay; Receive correct response after sending out password, the process of promptly going deep into is immediately carried out action.Shown in " A " in accompanying drawing 14, the accompanying drawing 15.During sending response back 1.0S, there is not other signaling information, then carry out and move, in the accompanying drawing 15 shown in " B " as accompanying drawing 14.If signaling is arranged during the 1.0S, then be as the criterion with last password.
2, simulator communication protocol.
Simulator AT and G III FaX communication protocol design according to CCITT tissue T .30 suggestion fully.The signal sequence of single page fax has been shown in Figure 16 letter, and each symbol definition and other details among relevant following two figure can be consulted interrelated data.Here emphasis is narrated the control relation between simulator and the channel communication.
Figure 17 has showed AT
1, G III FaX, CH, AT
2, G III FaX
2The overall process of whole facsimile machine analogue system, and disclosed signal relation between them.
Among Figure 17, the process of AT and G III FaX is synchronous, and the startup of CH process and stopping to be connected between two AT.Work as AT
1After receiving the graph text information of G III FaX, postpone the TS time, TS is a frame graph text information transmission time.Start channel communication software, and send one group " signaling ".If channel is normal, then on channel, begin to send graph text information, at this moment the CH state is by Tel ()/() FaX.
After the CH end of transmission, start AT on the one hand
2, make AT
2FaX carries out simulation process with the G III, controls the CH state on the other hand again by FaX ()/() Tel.
Five, after the present invention succeeds in developing, participated in Beijing-Lhasa once, the 32KPbs satellite channel; Beijing-Guangzhou 2.4KPbs code division multiple access satellite channel; And the test and the test of ground wire radio channel.Application indexes and technical performance all reach design standard.Use program control integrated data switch at home first, solved the technical barrier of multiple communication terminal network access work, will produce positive impact in the communications field.Plan of the present invention drops into defense-preparation duty the second quarter in this year, and with small lot batch manufacture, promotes the use of effect.
Claims (8)
1, a kind of total data communication exchange system, by communication terminal device, communication channel and integrated data switch are formed, it is characterized in that: integrated data switch (9), the critical piece of (9 ') comprises CPU-I (28), CPU-II (22), RAM/ROM I (29), RAM/ROM II (23), interface chip Ec-a (24), Ec-b (25), telephone control module MUX-T (33), Data Control module RS-422-C (14), F/P (15), MUX-F (16), MUX-P (17), facsimile machine control module Fx-a (18), FX-b (19), microcomputer and Chinese terminal control module P/C-a (20), P/C-b (21), teletype writer control module TEXC (32), communication channel control module EL-a (30), EL-b (31), sound sign indicating number control module En-a (26), En-b (27), the management software of cpu system.
2, total data communication exchange system as claimed in claim 1, it is characterized in that: said telephone control module MUX-T(33) form by telephone subscriber's circuit MH88500 and succeeding component MT8812, the control signal of MT8812 is supplied with by CPU-I, vocoder control module E
N-a(26), E
N-b(27) be to use under the 2400Pbs/4800Pbs data channel situation at long-distance channel.
3, total data communication exchange system as claimed in claim 1, it is characterized in that: cpu system adopts the parallel work-flow technology, CPU(22), CPU(28) all select Z80-A for use, clock frequency is 4MHZ, its ram space is 108KB, EC-a(24), Ec-b(25) be two independently parallel interface chips.
4, total data communication exchange system as claimed in claim 1 is characterized in that: facsimile machine control module FX-a(18), FX-b(19) message transmission is by a kind of serial i/o interface chip SIO(37 able to programme) realize.
5, total data communication exchange system as claimed in claim 1, it is characterized in that: said Data Control module MUX-P(17) be PC and Chinese terminal data multiplex selector switch, MUX-F(16) be G III FaX data multiplex selector switch, F/P(15) be total selector switch of (16) (17), a shared RS-422-C(14) interface.
6, total data communication exchange system as claimed in claim 1 is characterized in that: said communication channel control module EL-a(30), EL-b(31) be two identical channel interface modules.
7, total data communication exchange system as claimed in claim 1 is characterized in that: said teletype writer control module TEXC(32), adopt " GD-310 " serial photoelectrical coupler and " SLO " programmable chip.
8, total data communication exchange system as claimed in claim 1 is characterized in that: the software configuration of this system is as follows:
1. be hypervisor MON(51);
2. JOP-I (52), JOP-II (53) are operation procedure,
3. be the phone control subprogram MUX-T(54),
4. be the channel management subprogram EL(55),
5. be the dual-cpu communication subprogram EC(56),
6. be display subroutine LED(57),
7. Fax(58) be the emulation subprogram,
8. be CPU-II current process subprogram SP(59),
9. be the telegram subprogram TELEX(60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89101114 CN1013164B (en) | 1989-02-24 | 1989-02-24 | Total data communication exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89101114 CN1013164B (en) | 1989-02-24 | 1989-02-24 | Total data communication exchange system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1040120A true CN1040120A (en) | 1990-02-28 |
| CN1013164B CN1013164B (en) | 1991-07-10 |
Family
ID=4854151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89101114 Expired CN1013164B (en) | 1989-02-24 | 1989-02-24 | Total data communication exchange system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013164B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036106C (en) * | 1993-09-29 | 1997-10-08 | 冶金工业部包头钢铁设计研究院 | Program-controlled communication system for enterprise |
-
1989
- 1989-02-24 CN CN 89101114 patent/CN1013164B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036106C (en) * | 1993-09-29 | 1997-10-08 | 冶金工业部包头钢铁设计研究院 | Program-controlled communication system for enterprise |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1013164B (en) | 1991-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1195446A (en) | Household person communication system | |
| CN1148040C (en) | Data communication method, data communication terminal, data communication system and communication control system | |
| CN1081866C (en) | Applications of simultaneous analog and digital communication | |
| CN1492646A (en) | Method for implementing audio frequency telephone and central change-over processor | |
| CN1123594A (en) | Method and apparatus of providing audio feedback over a digital channel | |
| JPH04315334A (en) | Isdn access system for packet data | |
| CN1189035A (en) | Data control system in CDMA mobile communication system | |
| CA1219663A (en) | Data call transfer | |
| CN1078800C (en) | Method for interpreting dialled digits of a dialling sequence transmitted by a dialling means to a radio transceiver | |
| CN1099199C (en) | Service node for telephone network | |
| CN2862539Y (en) | Multipath switch-in apparatus | |
| CN101651958B (en) | Method and device for transmitting and receiving wireless G3 analog facsimile business | |
| CN1123248C (en) | Method and arrangement for establishing data communication via mobile telephone modem | |
| CN1043055A (en) | Digital key telephone system | |
| CN1040120A (en) | Total data communication exchange system | |
| CN1992656A (en) | Accessing and networking method for wireless digital communication | |
| CN1041680A (en) | Digital telephone system | |
| CN1388680A (en) | Remote control system and method for digital household network telephone | |
| CN1036106C (en) | Program-controlled communication system for enterprise | |
| CN100411412C (en) | Method and apparatus for transmitting and receiving telephone call control information by using incoming call display | |
| CN100583928C (en) | Communication terminal capable of long-distance setting hot key and working method thereof | |
| CN1126356C (en) | Multifunctional ISDN digital telephone set | |
| CN1622534A (en) | Network telephone system, main apparatus and telephone terminal of the same system | |
| CN1120638C (en) | Call connection control method in exchange | |
| CN116781828A (en) | Method and system for calling mobile communication terminal by computer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |